2021 Audi A8 3.0 S Line

Overview

• Make: Audi
• Model: A8
• Trim: S Line
• Version: 3.0 TDI S Line Tiptronic 4WD Euro 6 4dr (281 bhp)
• Year: 2021
• Mileage: 50,400 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 281 bhp
• Gearbox: Automatic (Tiptronic)
• Drive: Four-wheel drive
• Colour: Black
• CO2: 188 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 50,400 miles on the clock, this 2021 Audi A8 S Line has done roughly 6,400 fewer miles than a typical 2021 Audi A8. Priced at £27,499, it is advertised £707 below the AskCar estimate of £28,206. The AskCar estimate uses UK dealer asking prices, including 214 Audi A8 adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 158 days ago. Its asking price has since fallen by £1,300. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Approved Cars & Finance Approved Cars in Tonbridge. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £707 (2%) under the AskCar estimate of £28,206.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 214 priced Audi A8 adverts across different ages and specifications, as of 2 November 2026.

A 2021 Audi A8 with the 3.0 diesel engine is typically advertised at £26,700: the median of the 11 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2021 Audi A8 has been on sale for at least 158 days.

Price history

AskCar first saw this advert on 28 May 2026 at £28,799. Its asking price is now £27,499, £1,300 less. The latest price cut was seen on 4 October 2026.

Price changes recorded:

• 28 May 2026: £28,799
• 31 May 2026: £28,499
• 17 September 2026: £27,999
• 4 October 2026: £27,499

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 23 March 2027.

It has had 3 MOTs. The latest, on 24 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 50,403 miles, which matches the advertised 50,400 miles.

Advertised mileage is about 6,400 miles lower than the median mileage of a 2021 Audi A8 on AskCar.

Similar cars

3 other 2021 Audi A8 S Line 3.0 diesel automatic saloons are for sale at UK dealers, from £19,495 to £29,393, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A8 S Line, 3.0 diesel saloon, black. Mileage: 60,000 miles. Price: £24,995, £2,504 less than this car. Dealer: Motoring World London Motoring World in Hillingdon. AskCar page: https://askcar.co.uk/car/audi-a8-2021-7212e1dc57b0
• 2021 Audi A8 S Line, 3.0 diesel saloon, grey. Mileage: 24,000 miles. Price: £29,393, £1,894 more than this car. Dealer: Lookers Audi Teesside in Teesside. AskCar page: https://askcar.co.uk/car/audi-a8-2021-e73546b77166
• 2021 Audi A8 S Line, 3.0 diesel saloon, black. Mileage: 122,000 miles. Price: £19,495, £8,004 less than this car. Dealer: Motor Trade Centre in Barking and Dagenham. AskCar page: https://askcar.co.uk/car/audi-a8-2021-c101914ea161